From Philly.com:
A 50 percent increase in gasoline and  diesel-fuel taxes is being urged by a federal commission to finance  highway construction and repair until the government devises another  way for motorists to pay for using public roads.
The National Commission on Surface Transportation  Infrastructure Financing, a 15-member panel created by Congress, is  the second group in a year to call for higher fuel taxes.
 
With motorists driving less and buying  less fuel, the current 18.4-cent-a-gallon gas tax and 24.4-cent diesel  tax are failing to raise enough to keep pace with the cost of road,  bridge and transit programs.
In a report expected in late January,  commission members say they will urge Congress to raise the gas tax  10 cents a gallon and the diesel-fuel tax 12 to 15 cents a gallon.
 
At the same time, the commission will  recommend tying fuel-tax rates to inflation. It also will recommend  that states raise their fuel taxes and make greater use of toll roads  and fees for rush hour driving.
Such tax increases would be politically  treacherous for Democratic leaders in Congress - a gas-tax increase  was one of the reasons they lost control of the House and Senate in  the 1994 elections.
President-elect Barack Obama has expressed  concern about raising gas taxes in this economic climate. Commission  members said the government must find the money somewhere.
 
"The reality is, our current gas  tax doesn't pay for upkeep of the system we have now," said commission  member Adrian Moore, vice president of the Reason Foundation, a libertarian  think tank in Los Angeles. "We can either let the roads go to hell,  or we can pay more."